BuyDig via eBay offers the LG 27" 4K Ultra HD IPS LED-Backlit LCD FreeSync Gaming Monitor, model no. 27UD58-B, bundled with a $20 Visa Gift Card for $299.99 with free shipping. Assuming you'll use the gift card, that's $28 under our July mention and the lowest total price we could find by $19. It features a 3840x2160 (4K 2160p) native resolution, LED backlight, 1,000:1 contrast ratio, 5ms response time, and DisplayPort and HDMI.
Expect the gift card to arrive in two to three weeks.